We did regrass the fairways on the South Course at Olympia Fields as part of the project. There were a number of reasons which converged -- first, our DOG, Sam Mackenzie, was in charge of all grassing and did want to start out with as good a strand of bent as possible. He told us that keeping out poa completely is a losing battle, but if he can keep the poa percentage down, he can water less and maintain a firmer faster surface. As he told us, "brown bent comes right back up when it rains; brown poa is dead poa." Second, it would be a major pain keeping the fairways alive during the project, and possibly add to time expense. Killing the fairways allowed him to worry less about keeping grass alive (and freed up the money to pay for the regrassing) and gave more flexibility in planning out haul roads etc. In retrospect, I think big chunks of the fairways would have got chewed up pretty good regardless (christ, the machines they brought out to take out trees were enormous). He also used a new product to kill the grass called Basamid, which apparently worked very well in not only killing the poa, but nailed the seeds as well. He's also using some velocity, which supposedly can wipe out poa, to limit future poa infestation.